What are the symptoms of having a boy? Expectant parents who are pregnant for the first time are always curious about the gender of their baby, and if they want to conceive a boy, they need to know some relevant knowledge. This article will introduce in detail the most obvious symptoms of pregnancy with a boy from four aspects. 1. Reactions during pregnancy are reduced. Reactions during early pregnancy may include vomiting, fatigue, etc., but expectant mothers who are pregnant with boys may find that these reactions are reduced.